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High-Pressure Synthesis (high-pressure + synthesis)
Selected AbstractsHigh-Pressure Synthesis of Tantalum Nitride Having Orthorhombic U2S3 StructureADVANCED FUNCTIONAL MATERIALS, Issue 14 2009Andreas Zerr Abstract Among binary compounds, there is a high potential for discovery of novel members (polymorphic phases or compounds) of the nitrides of transition metals group due to a pronounced dependence of the oxidation state of the metals (M) on pressure. The power of high pressure,high temperature (HP-HT) route for synthesis of binary nitrides has already been demonstrated by the discovery of cubic nitrides of the group 4 and 14 elements, of crystalline polymorphs of P3N5, and by reports on formation of four noble metal nitrides. It is anticipated that such HP products exhibit, in addition to enhanced elastic and mechanical behavior, other functional properties making them interesting for industrial applications. Here, HP,HT synthesis research is extended to nitrides of group 5 elements, resulting in the discovery of a novel hard tantalum nitride, exhibiting U2S3 structure: , -Ta2N3 (Pbnm, a,=,8.1911(17),Å, b,=,8.1830(17),Å, c,=,2.9823(3),Å). The stoichiometry is supported by two independent means, verifying that , -Ta2N3 is the first thermodynamically stable transition metal nitride with a N:M ratio exceeding 4:3. Due to its high hardness and peculiar texture (needle-like and granular crystallites), , -Ta2N3 may find practical applications as a hard fracture resistant material. [source] ChemInform Abstract: High-Pressure Synthesis, Structure, and Electrical Property of Iodine-Filled Skutterudite I0.9Rh4Sb12 , First Anion-Filled Skutterudite.CHEMINFORM, Issue 30 2010Hiroshi Fukuoka Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: High-Pressure Synthesis and Crystal Structure of the Mixed-Valent Titanium Borate Ti5B12O26.CHEMINFORM, Issue 24 2009Almut Haberer Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: High-Pressure Synthesis, Crystal Structure, and Properties of the First Ternary Zirconium Borate ,-ZrB2O5.CHEMINFORM, Issue 36 2008Johanna S. Knyrim Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: High-Pressure Synthesis and Crystal Structure of the Vanadium Orthoborate VBO3.CHEMINFORM, Issue 36 2008Almut Haberer Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] High-Pressure Synthesis and Properties of Solid Solutions Between BiMnO3 and BiScO3.CHEMINFORM, Issue 26 2007Alexei A. Belik Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] High-Pressure Synthesis and Crystal Structure of the New Orthorhombic Polymorph ,-HgB4O7.CHEMINFORM, Issue 46 2005Holger Emme Abstract For Abstract see ChemInform Abstract in Full Text. [source] New Ferrimagnetic Oxide CaCu3Cr2Sb2O12: High-Pressure Synthesis, Structure, and Magnetic Properties.CHEMINFORM, Issue 39 2005Song-Ho Byeon Abstract For Abstract see ChemInform Abstract in Full Text. [source] High-Pressure Synthesis and Structure of SrCo6O11: Pillared Kagome Lattice System with a 1/3 Magnetization Plateau.CHEMINFORM, Issue 35 2005Shintaro Ishiwata Abstract For Abstract see ChemInform Abstract in Full Text. [source] Associating Borate and Silicate Chemistry by Extreme Conditions: High-Pressure Synthesis, Crystal Structure, and Properties of the New Borates Ln3B5O12 (Ln: Er,Lu).CHEMINFORM, Issue 32 2005Holger Emme Abstract For Abstract see ChemInform Abstract in Full Text. [source] High-Pressure Synthesis, Crystal Structure Determination, and a Ca Substitution Study of the Metallic Rhodium Oxide NaRh2O4.CHEMINFORM, Issue 17 2005Kazunari Yamaura Abstract For Abstract see ChemInform Abstract in Full Text. [source] High-Pressure Synthesis and Crystal Structures of Two New Polyphosphides, NaP5 and CeP5.CHEMINFORM, Issue 29 2004Xuean Chen Abstract For Abstract see ChemInform Abstract in Full Text. [source] High-Pressure Synthesis, Crystal Structure, and Properties of the New Orthorhombic Rare-Earth meta-Oxoborates Ln(BO2)3 (Ln: Dy,Lu).CHEMINFORM, Issue 23 2004Holger Emme Abstract For Abstract see ChemInform Abstract in Full Text. [source] High-Pressure Synthesis and Characterization of the Au-1201 Phase.CHEMINFORM, Issue 1 2004E. M. Kopnin Abstract For Abstract see ChemInform Abstract in Full Text. [source] High-Pressure Synthesis and Characterization of Perovskites with Simultaneous Ordering of Both the A- and B-Site Cations, CaCu3Ga2M2O12 (M: Sb, Ta).CHEMINFORM, Issue 51 2003Song-Ho Byeon Abstract For Abstract see ChemInform Abstract in Full Text. [source] ChemInform Abstract: Multianvil High-Pressure Synthesis and Crystal Structure of ,-YbBO3.CHEMINFORM, Issue 48 2001Hubert Huppertz Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: High-Pressure Synthesis of Yb2Cu2In and Its Physical Properties.CHEMINFORM, Issue 39 2001N. Tsujii Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] Multianvil High-Pressure/High-Temperature Synthesis, Crystal Structure, and Thermal Behavior of the Rare-Earth Borogermanate Ce6(BO4)2Ge9O22.CHEMINFORM, Issue 16 2006Gunter Heymann Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] High-pressure synthesis of ,-DyBO3ACTA CRYSTALLOGRAPHICA SECTION C, Issue 12 2004Holger Emme ,-Dysprosium borate (,-DyBO3) was synthesized under conditions of high temperature and pressure in a Walker-type multi-anvil apparatus at 3,GPa and 1323,K. The compound is isotypic with the already known ,-samarium and ,-europium orthoborates. [source] GaN based light emitters fabricated on bulk GaN substrates.PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 6 2004New class of low dislocation density devices Abstract In this work we demonstrate the quality of laser diodes fabricated on bulk GaN substrates. These substrates were obtained via high-temperature, high-pressure synthesis and are characterized by a dislocation density as low as 102 cm,2. The epitaxial structure was deposited using a combination of MOVPE and MBE methods. Thanks to such a low and uniform density of dislocations it was possible to realize high power, pulsed current laser diodes with a total output power exceeding 2.5 W. Interestingly enough, the MBE growth method can produce very satisfying results once the growth is resumed on bulk GaN substrates. This contradicts the common believe concerning the poor applicability of the MBE method for the growth of nitride violet laser structures. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source] | |||||||||||||